Parameters that affect Fire Severity of Group A Plastics
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Author: Hesam Tavoosi, CFPS, CWBSP, CSITMS
In-Rack sprinkler effects on Required Density of Ceiling Sprinklers
In-Rack sprinkler effects on Required Density of Ceiling Sprinklers Where the installation of in-rack sprinklers is not mandatory and is an option, designer can choose it and take the benefit. For the following example, NFPA13 permits designing the system with or without in-rack sprinklers: Double Row Rack Storage, Open Rack Type, Non-encapsulated Class I commodity, […]
Ordinary and High temperature sprinklers
In NFPA 13, there are conditions where the designer can choose Ordinary or High temperature sprinklers. In each case some advantages are afforded. In this text, we examine some parts of NFPA 13 that are related to this subject. Advantages of High Temperature Sprinklers: 1) A 25% reduction of sprinkler operation area (but not less […]
Effects of Storage Height on the Density of Ceiling Sprinklers
There are two Figures in chapters 14 and 16 of NFPA 13 (2016 edition) for adjusting the density of ceiling sprinklers in according to the storage height where CMDA sprinklers are applied. Consider the following example: Double Row Rack Storage, Open Rack type, Non-encapsulated Class I commodity, 15 ft. Storage height, 4 ft. Aisle width, […]
Selecting Design Point from Density/Area Curves
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